International Journal of Horticulture and Food Science
2022, Vol. 4, Issue 1, Part B
Effectiveness of new chemicals in the management of the amount of apple red mite (Panonychus ulmi Koch)
A Anorbaev and A Raxmanov
The article provides information on the harm and control methods of apple red mite (Panonychus ulmi Koch) in apple orchards. Apple red mite (Panonychus ulmi Koch) is the most dangerous pest of seed orchards and other crops of other European countries. This pest can destroy more than half of the crop yield in some fields. In normal years, spiders are said to destroy 6-10% of the gross crop, and in some years even 14%. Apple red mite (Panonychus ulmi Koch) is the most dangerous and harmful in terms of mites. It is the main pest of melons, technical plants, and horticulture, ornamental trees. More than 150 species of spiders in the world are listed as the main pests of crops.
Materials and methods:New chemical Envidor em. k against apple red mite (Panonychus ulmi Koch) in seed orchards. To determine the biological effects of the drug (0.5 l/ha), research was conducted on 25 (twenty-five) hectares of Fuji apple orchards located on the territory of Zevar farm in Sariosiya district in the Surkhandarya region. Agrotoxicological experiments were carried out by the method of K.A. Gar, Sh. T. Khojaev. The calculation of biological efficacy in field and laboratory experiments was determined according to the W.S. Abbot formula, which takes into account the control option. Research results. According to research, the new Envidor em. k. (0.5 l/ha) was the highest on the 3days of our observations in the variant in which the drug was used, i.e., the biological efficacy was 89.2%.
Conclusion:Envidor em. k. high biological efficiency can be achieved by applying the drug at the rate of consumption per hectare (0.5 l/ha). The fight against apple red mite (Panonychus ulmi Koch) can be obtained the expected result by timely agro-technical measures in late autumn and early spring, the use of low-toxic chemicals for the environment, and beneficial insects during the growing season.